University of Phoenix Material
Visual System Worksheet
__C___ Bill perceived the cover of his book was red even though the light changed in the various rooms in which he read the book.
1. ___I__ Mary damaged her cerebral cortex and now perceives the world in black, white, and grey.
2. ___B__ Phyllis wears only various shades of purple. Her clothes are many different types of purple, but she only wears ___________ of purple.
3. ___L__ The shade of achromatic color stays the same regardless of how much sunlight is reflected.
4. ___G__ You go to a lecture and the topic seems to focus on blue-yellow and red-green perception of color. The lecture is likely discussing ______________.
5. ___E__ ...view middle of the document...
This shows the ____________.
___J__ There are basic colors, but the ability to perceive a large number of colors depends on _____________, _____________, and _________________.
11. __H___ The edge of an illuminated e-reader next to a dark room is called __________.
A. Saturation B. Hues C. Color Constancy D. Cones
E. Green F. Subtractive Color Mixture G. Opponent Process Theory of Color Vision
H. Reflectance Edge I. Cerebral Achromatopsia J. Wavelength
K. Dichromatism L. Lightness Constancy M. Intensity
N. Young-Helmoltz Theory of Color Vision
In 200 to 300 words, describe the role of Gestalt principles in perceptual organization. Explain how these principles help us organize our world.
Perceptual organization refers to the process by which elements in the environment become perceptually grouped to create our perception of objects (Goldstein, 2014). They are principle of good continuation, principle of uniform connectedness and principle of common fate are all very similar, as they describe our tendency to complete perceive images that are incomplete, we also tend to recognize as “units” those elements that represent a continuous shape and move in the same direction; In the principle of pragnaz, elements are organized in the most symmetrical, regular and stable figures possible. Principle of similarity describes how we perceive alike forms as part of a single one, principles of common region and proximity describes our tendency to group forms that are closer to each other’s more than to others as a single unit or object.
These principles help us perceive a coherent visual world that is organized in regions and objects, rather than a chaotic overlapping of different lighting and colors.